SMA
Solar Technology AG
Connecting External Sources
Technical Description
SI2012_2224-TEN082311
137
Generator Interface 233.07 GnSrtMod GenMan; Start at the Generator
* Transfer Relay
13.1.5 Automatic Generator Operation
In automatic operating mode ("234.01 GnAutoEna" parameter), the Sunny Island automatically
defines the settings (as a function of battery charge state or loads) to determine when the generator
starts and how long it runs. The automatic operating mode is enabled via GnAutoEna = On
(Default). If GnAutoEna = Off, the automatic operating mode is deactivated.
In addition, the user can also manually start and stop the generator, if required.
State-of-charge dependent start
The time periods t1 and t2 are defined using the "234.07 GnTm1Str" and "234.08 GnTm2Str"
parameters respectively. The start time for t1 (and the end of t2) is defined with "GnTm1Str" and the
start time for t2 (end of t1) is defined with "GnTm2Str".
1
Generator start at GenMan
2
Beginning of GenMan generator warm-up phase
3
Generator warm-up time
4
GenMan sends ready for connection signal
5
Generator is connected via Sunny Island
6
Current limitation
7
Current is reduced, battery absorption phase
8
GenMan signals generator stop
9
Generator disconnection via Sunny Island
10 Generator post-run period completed, generator
stop
11
Stop time has expired
NOTICE!
•
Manual inputs on the Sunny Island have a higher priority than automatic operation.
•
If the Sunny Island is manually stopped while the automatic operating mode is
activated it switches to stop/lock operating mode.
•
If Generator Automatic Start is activated and the conditions for automatic operation
are met, the Sunny Island changes back into the Start operating mode after lock
time (or manual acknowledgment with the "540.02 GnAck" parameter).
Gn
GnReq
GnRun
(DigIn)
TrfRel*
ExtCur
11
10
8
9
7
6
5
4
3
2
1
